Combination coal and gas range.



, 1. w. MUELLER. COMBINATION COAL AND GAS RANGE.

APPLICATION FILED MAY I6. I9I

I Patentd Sept. 24,191&

6 SHEETS-SHEET l.

Wilmiqooes 1. w. MUELLER.. COMBINATION COAL AND GAS RANGE.

PatentedSept. 24, 1918.1

1. w. MUELLER. COMBINATION COAL AND- GAS RAVNGE.

APPLICATION FILED MAY 16. I916.

' PawntedSept. 24,1918.

I 6 $HEETS-SNEET 3.

.1: m Ma gie.

J. w. MUE LE comsmmon ConL'Kn'o GAS RANGE.

qrrucm'on FILED .MAY 16. ms. Patel ltedSept. 24,191&

0 wk 72'" 7/ I 'v Y O 4 v 737g n .42 "72 v 0 .9 Q

,0 "i m @p O Q 0 WW J rnz mum: an": my. morn-Luna, \usumomm n. a

1. w." M U E L LER comammon con AND ens RANGE. Armcmnn FILED an as. me. 1 ,28 0,070. Y Patented Sept 24,1918.

mains-sum s.

7 is a horizontal section through a stove constructed in accordance with my invention showing he arrangement of the flue strip and the openings affording communication between the bottom flue and the 7 Like numerals of reference refer to like parts in the several figures of the drawing.

In the drawings 1 indicates a fire box, 2 the ash pit, 3 the oven of my improved construction of combination coal and gas 5 range, and 4 the top which is provided with a foraminated portion 5 under which is adapted to be arranged a series of burners not shown. The oven'is surrounded by the ordinary coal flues so that theproducts of combustion 'from the fire box Wlll circulate around the same in order to heat the oven stem 12 mounted in the walls oft e back flue as clearly shown inv Fig 4. The back flue is provided with a flange 9 to which is connected a stove pipe collar extension 9 extendingjupwardly' above thetop of the stove to which a stove pipe 13 is adapted to be connected in the ordlnary manner; 1 '1 In the construction thus far described, it will be seen that when the fire box. 1 isi filled with solid fuelsuch as coal, the products of combustion pass over the oven through the top flue down the side, flue under the oven through the bottom flue into the back flue and out the stove pipe in the ordinarymam ner; When the damper 11 isopened a direct-draft is obtained'so 'as'td'allow 'the stove to burn quickly, and by"closing the damper 11, the products are conveyed around the oven, the bottom flue being providedwith a flue strip A for increasing the circulation of the products of combustion under the bottomthereof inorder; to utilize the heat units.

'The stove is provided with the usual bottom plate'14 which is formed with flanged openings 15 and 16 at each side of the bottom flue 8under which are arranged housings 17and 18' forming burner chambers which are provided with air inlets for supplying air to the tubular burners 19 and 20 arranged within said bur'ner chambers, said burners extending out through :the bottom flange of the stove as shown in Fig. 1 and 1"? qvided', with the usual valves 21 and 22' I hontrolling said buiiiers."

Arranged over the openings 15 and 16 are castin s23 and2j4 forming gasflue's 25 and 26 w'h cht-erminate'at their u er. and over openings 27 and 28;,formed in t 'e end'w'alls of the oven chamber?) as clearly shown F igs. 2 and 3 so as to convey the products of combustion from the burner chambers 17 and 18 directly into the oven chamber 3 in order to heat the same. The burner 19 is r of greater length than the burner 20, and in order to distribute the products of combustion in the gas flue 26, I provide the Y same with a deflector 2-9 as shown in full lines in Fig. 2 and in dotted lines in Fig. 3 which conveys the products of combustion rising from the short burner 20 rearwardly through t e exit 30 of the oven 3 topass downwardly'in'the back flue 9 under the oven through the bottom flue which is provided with the usual flue strip for increasing the circulation ofthe products of combustion in order to utilize the heat units. As

the hot air and products of combustion enterthe bottom flue from the back flue they are reheated by radiatiomby coming intocontact with the side walls'33 and 34 V of 'thebottom flue 8 as these walls are arranged directly over the burner chambers and bc'come'heated to such an extent that they throw ofl additionalheat units by radiation which mingle with the hot air and products of combustion entering the bottom flue. The hot air and products-of combustion from the bottom flue pass into the side line through an opening B from which they I pass into the top flue and out through the opening 10 into the back flue.

1 It will be noted that the construction of tubular gas burners employed for heating the oven in the right hand gas flue is formed shorter than the burner of the left-hand flue in order to diminish the capacity thereof as I have foundb experimenting that the oven will be even y heated by employing burners of diflerent capacity, as' the side flue in which the gas flue is arranged containing the short burner receives all of the hot air and products of combustion passing out of the oven supplied from both of the burner chambers. I

VVhenthe stove being used as a gas stove, I have found, thatin order to obtain a the best re'siilt so as toutilize all of the heat units created in thefburner chambers that byprovidiri'gf the top of the'stovewith-air ihlets'controlled by acheck damper; that the velocity of the "products of-combustion passing-into and around the oven will be have shown these reduced, a d! while for-who stove when being used an solid: fuel burning stove. 1 i 3 I In orderto increase the circulation oi the bottom flue of thestove, the side=radiating late 33 is provided with'a series of openin'g's ad'acent'its rearendaflording communica tion between the bottom flue and the gas flue at the rear of; the bottom flu'eand adjacent the bottom of theoven. By providing inlet openings 'atthispoint for the'bottom flue, small jets of hot air and products of leave the opening-B which aflords'conununication between the bottomflu'e-and the side flue and by the arrangement of the line strip A when solid 'fuelsuch as coal is being used in the stove; the products, oicombus tion from the fire box pass into the top flue down the side flue, into the bottom flue, through the opening B; around the "flue'strip A,- and out the bottom flue into the'baek When as is used, the back flue'iscl osed ata po 1:- above theoven em and the products of combustion passin into the oven from the side gas flues circn ate through the oven'ont the exit into the back'flue, from the back "flue into the bottom flue where'the products of combustion-and hot-[airfare subjected to the additionaljets of" roducts of combustion from the inletsO an the hot air andproducts of combustion are reheated by coming into contact with'the'radiating plates-33 and 34forming the, side-wallsof 'thchottbm .flue Band-by the arrangement of the flue strip A the products of combustion and hot air circulate'in the-bottom flue'in order to thoroughly heat the bottom of the a even before they pass ont'through the open- B into the side flue from whichthey pass into the top 'flue,'and out of the exit into the backflue;

" In my construction by providing'the' oven with slde lines of difierent length; the shorter flue being arrarxged within the side coal flue of the oven, I am still ableto comtriunicate the sidefcoal flue with the bottom flue by anopeuing so as to'allo'vethe roducts of combustion-from the'lmrning edit-to ass from the side flue into thebottoim flue, and when burning gas fuel the products of comlmstion are allowed to pass from the bottom flue into the side flue. 1 r

in 'which theheat have own been utilisedarereheated as they passthrough the-bottom flueby coming into contact with 'the-radiating-plates so as to thorough heat the bottom of the oven in order to obtain the desired results.

While-I have shown and described 1 the damper rods connected in a particular man'- ner for operating and controlling the various dampersiherein shown and described for controlling the' flueg I: do not wishto limitmyself to any particular arrangement of damper 7 control as the -same result can be obtained witha stove constructed asherein shown and described havingl various-other forms of dam-per controls; and therefore I-do'not Wish to limit myself to the particular construction and arrangement as-shown; and I reserve the right'to employ'any and all kinds of dampers in connection with the flue arrangement without departing from the spirit of my invention asdeflncd in the claims.

' [While I have show and described only one valve looking member in connection with the gasvalve'and damper rods, I wish to reserve-the right to provide a locking device the-"spirit of my inwention. From the foregoing description it will be seen that I 'hsve provided a combination coal and gas range in'whieh' the usual coal for each gas rom without departing from fines sfiill'cn?loyed, and by the provision'ef gas' fltlcs or convcyingthe roducts of" combustion' from burner chain is di- 'rectly into-the ovenchumber inconnection with dampers, I am able toconvert a coal range into 'agas range in such a manner that the oven-thereof will be thoroughly heated [by the products of combustion I and hm ig; a I claim:

v 1. A stove having';an oven chamber surrounded'b fines, said oven chamber having an out et connnunicatingwith the back flue thereofand inlet'openings in-the' sides thereof'adjaceht'the bottom, gas'flues communicating with said inlet openings, burner chambers arranged under said gas'fiues; and a damper for closing theoutlet opening of said even, said damper forming a closure for said flue. m I

"2. combir'ledsolid fuel and gas burnin gstove havingan oven therein provided wlth the usual fines, said oven having an,

opening aflbniingcommunication with the back flue, a damper for closing said opening,"said damper forming a closure forsaid flue-when in open position, gas flues a'rranged at the sides of the oven over inlet openings fiormed therein and burnerjchaur bers arranged under sald fluesr 3:A combined "solid fuel and gas burning stove having an oven therein, said 3 oven being providedwithjinlet openings in its sides, gas fluescohimunicating with said inchambers arranged B0 let openings5 damper for closing the back flue to cause the products of combustion assing out of the oven chamber to pass un er the oven.

22. A combination coal and gas range having an oven chamber provided with the usual coal flues, said oven chamber having an exit opening communicating with the back flue of said stove, as flues arranged at each side of said oven c iamber having openings communicating with said oven chamber, one of said gas flues having openings communicating with the bottom flue of said stove, and a damper forming a closure for said oven exit in one position, and a closure for the back flue in another position to cause the products of combustion esoapin from the oven chamber to pass downwarc 1y into the bottom flue.

23. A stove having an oven chamber provided with the usual coal flues including top, side, bottom, and back flues, side gas flues having openings communicating with said oven chamber, said oven chamber hav- Gopies of this patent may be obtained for five cents each, by addressing the Commissionerof Patents, 7

ing an outlet communicating with the back flue, and means for causing the products of combustion passing out of said outlet to pass downwardly in said back flue under said oven and out the side flue thereof.

24. A stove having an oven chamber surrounded by the usual coal flues, gas flues arranged at each side of said oven having openings communicating therewith, burner chambers arranged under said gas flues, said oven chamber having an outlet communicatin with the back flue, means for closing said back flue to cause the products of combustion to pass into the bottom flue of said stove, and means for reheating the products of combustion as they pass through the bottom flue thereof.

In testimony whereof I hereunto aflix my signature in the resence of two Witnesses.

fAOOB W. MUELLER.

WVitnesses GEO. (J. MUELLER, E. M. JENNINGS.

Washington, 1). 0. 

